BasicMultiVertexState Class Reference

#include <BasicMultiVertexState.h>

Inheritance diagram for BasicMultiVertexState:

List of all members.

Public Member Functions
	BasicMultiVertexState ()
	BasicMultiVertexState (const std::vector< VertexState > &vsComp)
virtual BasicMultiVertexState *	clone () const
virtual std::vector< VertexState >	components () const
GlobalError	error () const
bool	isValid () const
GlobalPoint	position () const
GlobalWeight	weight () const
double	weightInMixture () const
AlgebraicVector3	weightTimesPosition () const
Private Member Functions
void	checkCombinedState () const
Private Attributes
VertexState	theCombinedState
bool	theCombinedStateUp2Date
MultiVertexStateCombiner	theCombiner
std::vector< VertexState >	theComponents
bool	valid

---

Detailed Description

Multi state measurement of a vertex. Some data is calculated on demand to improve performance.

Definition at line 12 of file BasicMultiVertexState.h.

---

Constructor & Destructor Documentation

BasicMultiVertexState::BasicMultiVertexState

(

)

[inline]

Constructors

Definition at line 18 of file BasicMultiVertexState.h.

Referenced by clone().

: valid(false){}

BasicMultiVertexState::BasicMultiVertexState

(

const std::vector< VertexState > &

vsComp

)

---

Member Function Documentation

void BasicMultiVertexState::checkCombinedState

(

)

const [private]

Definition at line 61 of file BasicMultiVertexState.cc.

References MultiVertexStateCombiner::combine(), theCombinedState, theCombinedStateUp2Date, theCombiner, theComponents, and valid.

Referenced by error(), position(), weight(), and weightTimesPosition().

{
  if (!valid) throw VertexException("BasicSingleVertexState::invalid");
  if (theCombinedStateUp2Date) return;

  theCombinedState = theCombiner.combine(theComponents);
  theCombinedStateUp2Date = true;
}

virtual BasicMultiVertexState* BasicMultiVertexState::clone

(

void

)

const [inline, virtual]

Access methods

Implements BasicVertexState.

Definition at line 24 of file BasicMultiVertexState.h.

References BasicMultiVertexState().

  {
    return new BasicMultiVertexState(*this);
  }

virtual std::vector<VertexState> BasicMultiVertexState::components

(

)

const [inline, virtual]

Vector of individual components in the mixture.

Reimplemented from BasicVertexState.

Definition at line 60 of file BasicMultiVertexState.h.

References theComponents.

                                                    {
    return theComponents;
  }

GlobalError BasicMultiVertexState::error

(

)

const [virtual]

Mean covariance matrix of the mixture (covariance matrix of the collapsed state)

Implements BasicVertexState.

Definition at line 18 of file BasicMultiVertexState.cc.

References checkCombinedState(), VertexState::error(), and theCombinedState.

{
  checkCombinedState();
  return theCombinedState.error();
}

bool BasicMultiVertexState::isValid

(

void

)

const [inline, virtual]

The validity of the vertex

Implements BasicVertexState.

Definition at line 67 of file BasicMultiVertexState.h.

References valid.

{return valid;}

GlobalPoint BasicMultiVertexState::position

(

)

const [virtual]

Mean position of the mixture (position of the collapsed state)

Implements BasicVertexState.

Definition at line 11 of file BasicMultiVertexState.cc.

References checkCombinedState(), VertexState::position(), and theCombinedState.

{
  checkCombinedState();
  return theCombinedState.position();
}

GlobalWeight BasicMultiVertexState::weight

(

)

const [virtual]

Mean weight matrix (inverse of covariance) of the mixture ( weight matrix of the collapsed state)

Implements BasicVertexState.

Definition at line 25 of file BasicMultiVertexState.cc.

References checkCombinedState(), theCombinedState, and VertexState::weight().

Referenced by weightInMixture().

{
  checkCombinedState();
  return theCombinedState.weight();
}

double BasicMultiVertexState::weightInMixture

(

)

const [virtual]

The weight of this state. It will be the sum of the weights of the individual components in the mixture.

Implements BasicVertexState.

Definition at line 45 of file BasicMultiVertexState.cc.

References gather_cfg::cout, theComponents, valid, and weight().

                                                    {
  if (!valid) throw VertexException("BasicSingleVertexState::invalid");
  if (theComponents.empty()) {
    cout << "Asking for weight of empty MultiVertexState, returning zero!" << endl;
    throw VertexException("Asking for weight of empty MultiVertexState, returning zero!");
    return 0.;
  }

  double weight = 0.;
  for (vector<VertexState>::const_iterator it = theComponents.begin(); 
        it != theComponents.end(); it++) {
    weight += it->weightInMixture();
  }
  return weight;
}

AlgebraicVector3 BasicMultiVertexState::weightTimesPosition

(

)

const [virtual]

Mean (weight*position) matrix of the mixture

Implements BasicVertexState.

Definition at line 32 of file BasicMultiVertexState.cc.

References checkCombinedState(), theCombinedState, and VertexState::weightTimesPosition().

{
  checkCombinedState();
  return theCombinedState.weightTimesPosition();
}

---

Member Data Documentation

VertexState BasicMultiVertexState::theCombinedState [mutable, private]

Definition at line 75 of file BasicMultiVertexState.h.

Referenced by checkCombinedState(), error(), position(), weight(), and weightTimesPosition().

bool BasicMultiVertexState::theCombinedStateUp2Date [mutable, private]

Definition at line 76 of file BasicMultiVertexState.h.

Referenced by checkCombinedState().

MultiVertexStateCombiner BasicMultiVertexState::theCombiner [private]

Definition at line 78 of file BasicMultiVertexState.h.

Referenced by checkCombinedState().

std::vector<VertexState> BasicMultiVertexState::theComponents [mutable, private]

Definition at line 74 of file BasicMultiVertexState.h.

Referenced by checkCombinedState(), components(), and weightInMixture().

bool BasicMultiVertexState::valid [private]

Definition at line 73 of file BasicMultiVertexState.h.

Referenced by checkCombinedState(), isValid(), and weightInMixture().